Mounting device of shower nozzle

Abstract

Between a joint 10 and a fitting part of the sprinkler head S, an O-ring 30 being a seal member for holding water-tightness in contact with both thereof is provided. At the inner periphery of the joint 10, a lock ring 20 having spring property is provided in a diametrically expandable manner. At the outer periphery of the fitting part 1 of the sprinkler head S, a step part 7 to which the lock ring 20 is fitted is disposed. At the step part 7, a tilting guide surface 6 for guiding the lock ring 20 is provided. Thus, at the thread terminating position of the sprinkler head S, the lock ring 20 is fitted into the step part, so that the sprinkler head S can be joined to the joint 10.

Description

technical field [0001] The present invention relates to a structure of a joint and a nozzle for attaching a nozzle for fire extinguishing to piping. Background technique [0002] Typically, the sprinkler head is mounted via a joint on a riser that is connected to a horizontal pipe running in the ceiling and extends downwards close to the ceiling. [0003] Wherein, in the past, when the shower head is connected to the joint, it is realized by screwing the male thread provided on the outer circumference of the installation part of the shower head and the female thread provided on the inner circumference of the joint. At this time, in order to prevent water leakage when water flow is introduced into the piping, the screw joint is wrapped with sealing tape and a sealant is applied in advance. [0004] In addition, in the existing solution different from the above-mentioned screw joint, by installing the stop nut on the lower end of the predetermined joint, the stop nut is provi...

AI Technical Summary

Problems solved by technology

Due to the complexity of this structure, the manufacturing cost is high

In addition, because these connecting pieces and balls lack the function of preventing the nozzle from falling off and do not have sealing performance, in order to prevent water leakage, another method must be adopted, and sealing components such as O-rings are required. In addition, in order to prevent water leakage reliably, no It is not required to improve its installation accuracy. In this way, it is worried that it will cause difficulty in inserting the nozzle and damage the O-ring when inserting the connection.

[0015] In addition, further, since the shower head is installed by connecting the connecting piece and the connecting groove to each other, once it is installed on the joint, it is not easy to take it off from above. If it can be taken off, the connecting piece is also damaged and cannot be used again. , including joints must be replaced, there is a problem of poor maintainability and time and cost of maintenance

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